Pump-valve.



WILLIAM T. ANGELI., OF CHICAGO, ILLINOIS.

` PUMP-VALVE.

inseam.

` Specification of Letters Patent.

Patented Nov. 9, 1915.

Application filed July 25, 1914. Serial No. 853,020.

T 0 all whom it may concern.'

.Be it known that I, IVILLIAM T. ANGELI., a citizen of the United States of America, and a iesident of Chicago, county ot Cook, State of Illinois, have invented certain new and useful Improvements in Pump-Valves, of which the following is a specification.

. My invention relates to pump valves and has for its object improvements in the valve itself and in the parts immediately associated therewith.

In the accompanying drawings Figure 1 is an elevation being mainly in section on line 1-1 of Fig. 2; Fig. 2 is a plan, the up# per parts being in section on line 2 2 otl Fig. l; and-Fig. 3 is a side elevation being partly in section on the broken line 3 3 ot' Fig. l.

The ring 1 is provided with threads 2 'adapted to be screwed into the valve deck of a pump. On the seat 3 is a packing ring fl held in an annular groove in the valve body 5. rlhe lower face of the valve body is in the form of an inverted cone G having a curved slope 7, and the inner face of the ring 1 is in the form of an inwardly convex curve 8 connecting the inner edge of the seat 3 with the bottom threaded portion or' the ring 1. These curves 7 and 8 are designed to give an easy and smooth flow of water upward through the ring l when the valverises from its seat. It will be observed that the Vwater opening through the ring is not obstructed by any bridges as in ordinary pump valves oi this type, and it is one of the objects oit the present construction to avoid the necessity of such obstructions.

On the top of the ring 1 are posts El and 10 which rise above the top of the valve body 5 and serve as lower guides for the valve as it rises 'from its seat. These posts are made substantial enough to serve as means it'or screwing the ring 1 to its place inA the valve deck by placing a ba across the ring and using it as a lever engaging the posts yto turn the ring.

Extending over the center of the valve, and engaging Athe outer faces of the posts 9,

is a spring 11 or' bronze or othernon-rustf ing material. rllhe legs of this spring bridge preferably rest upon the smooth upper face oit the ring 1 and are provided with holes 'for engaging the projecting pins 12 in the posts 9. It will be obviousthat the bearingoif the legs of the springll upon the ring 1 and the engagement of the spring with the pins 12 serve as means for holding the spring bridge in its proper position over the center ot the valve. Also that by lspringing one of the legs of the bridge outward so as to free it from its pin 12, the said bridge may be easily removed.

On the center of the valve body 5, and preferably integral therewith, is a stem 13 which passes through a hole in the center of the bridge 'l1 and serves as an upper guide for the valve in its movements. The hole in the bi idge is preferably formed by forcing part of the metal of' the bridge inward toformua ring 1l surrounding the stein 13. and the upper part of the stem 13 is preferably made smaller than the lower part so as to form a shoulder 15 to limit the upward movement of the valve.

Surrounding the stemY 13, and between the bridge 11 and the valve body 5, is a helical spring 16 which serves to normally hold the valve to its seat. For valves working under light water pressure, the upper face ot the valve body may be recessed as shown at 17 to give a greater length to spring 1G, but for heavy water pressures it is preferable to omit the recess for purposes of strength and stiffness in the valve body.-

Valves of this type are usually' placed in positions having restricted overhead space. The spring bridge construction enables me to obtain ample liit to the valve with very little vertical height over all, and at the same time furnishes an easy means for removing the valve in this restricted space. By making a valve seat without bridges across the port to furnish a valve guide I am enabled to provide a fuller and lil-eer port opening tor the same size et aperture7 and at the same time to use only one packing ring el.

I am aware that valve ports without bridges are Common in man v kinds ot valves,

but I am not aware that they have hereto` fore been used in the type of valve herein described. An illustration of the type of valve to which I re'ter may be found in patent to lllloodford, No. 794,209, dated July 11, 1905.

lVhat I claim is:-

1. A valve seat providing a port and having valve guiding posts outside ot and above the seat. 'al valve within said guides. said valve being provided with an upwardly projecting stem, and a removable spring bridge upon the seat, said valve having the central i part of its lower face in the form of a curved cone projecting into the center of the portand said cone being adapted to pass laterally between the posts when the valve is raised to a position with its face level with the to s of said posts, and a removable guide or said valve above the tops of said posts.

3. The combination with a ring providing an unobstructed port, a valve seat and posts serving as means-for screwing the ring into and removing it from position in a pump, of a valve resting upon the seat and guided by the posts, said valve being provided with an upwardly projecting stem, and a removable bridge secured to two of said posts and servi ing to guide the upper end of the valve stem.

4. The combination with a ring providing an unobstructed port, a valve seat and short valve guiding posts located about said seat, of a valve resting upon the seat and guided by said posts, saidvalve beingl provided with an upwardly projecting stern and a downwardly projecting cone adapted to pass between adjacent posts when thevalve face is raised above the tops of said posts, and removable bridge for guiding the upper end of said stem, said bridge and stem being arranged to prevent the valve from rising above the tops of the guiding posts.

Signed at Chicago, Illinois this 23rd day of July, 1910. v

` WILLIAM T. ANGELL. Witnesses:

JAMES C. REDFIELD, C. L. REDFIELD. 

